Replace uses of the deprecated std::auto_ptr with OwningPtr.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179373 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-as/llvm-as.cpp b/tools/llvm-as/llvm-as.cpp
index 273c427..d6f1919 100644
--- a/tools/llvm-as/llvm-as.cpp
+++ b/tools/llvm-as/llvm-as.cpp
@@ -94,7 +94,7 @@
 
   // Parse the file now...
   SMDiagnostic Err;
-  std::auto_ptr<Module> M(ParseAssemblyFile(InputFilename, Err, Context));
+  OwningPtr<Module> M(ParseAssemblyFile(InputFilename, Err, Context));
   if (M.get() == 0) {
     Err.print(argv[0], errs());
     return 1;